M-system DL30-G, Руководство пользователя

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307 DL30-G USERS MANUAL EM-8571-G Rev.2
Modbus commands
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Data and control functions
CODE NAME
01 Read Coil Status Yes Digital output from the slave
02 Read Input Status Yes Status of digital Inputs to the slave
03 Read Holding Registers Yes General purpose register within the slave
04 Read Input Registers Yes Collected data from the field by the slave
05 Force Single Coil Yes Digital output from the slave
06 Preset Single Register Yes General purpose register within the slave
07 Read Exception Status
08 Diagnostics
09 Program 484
10 Poll 484
11 Fetch Comm. Event Counter
12 Fetch Comm. Event Log
13 Program Controller
14 Poll Controller
15 Force Multiple Coils Yes Digital output from the slave
16 Preset Multiple Registers Yes General purpose register within the slave
17 Report Slave ID
18 Program 884/M84
19 Reset Comm. Link
20 Read General Reference
21 Write General Reference
22 Mask Write 4X Register
23 Read/Write 4X Registers
24 Read FIFO Queue
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Exception code
CODE NAME
01 Illegal Function Yes Function code is not allowable for the slave
02 Illegal Data Address Yes Address is not available within the slave
03 Illegal Value
04 Slave Device Failure
05 Acknowledge
06 Slave Device Busy
07 Negative Acknowledge
08 Memory Parity Error
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Diagnostic subfunctions
CODE NAME
00 Return Query Data
01 Restart Comm. Option
02 Return Diagnostic Register
03 Change Input Delimiter Character
04 Force Slave to Listen Only Mode